
<html>
<head>
<script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.js"></script>
</head>
<body>测试内容<input></input></body>

<script type="text/javascript">
//禁用复制粘贴F5及Backspace
	document.onkeydown=function(){
		//禁用Ctrl+C
		if	(event.ctrlKey && event.keyCode==67){return false;}
		
		//禁用Ctrl+V
		if	(event.ctrlKey && event.keyCode==86){return false;}
		
		//禁用F5
		if	(event.keyCode==116){return false;}

		//当焦点位置为非文本框时，禁用BackSpace
		//IE下不兼容window.event.target，使用srcElement代替
		if(event.keyCode==8){
			var ev=window.event;
			var obj=ev.srcElement;
			if	(obj.getAttribute('type')!='text'&& obj.getAttribute('type')!='textarea'){return false;}
		}
	}
</script>
<script type="text/javascript">
	//屏蔽右击
	document.body.oncontextmenu=document.body.ondragstart=document.body.onselectstart=document.body.onbeforecopy=function(){return false;};
	//屏蔽复制粘贴
	document.body.oncopy=document.body.oncut=function(){return false;};	
	
	var blurNum=1;
	$(window).on('blur resize',function(){	
		if(blurNum>3){
			alert("你已经违规3次考试结束！");
			$(window).off("beforeunload");
			CloseWebPage();
		}else{
			alert("考试中切换窗口违规"+blurNum+"次！");
		}			
		blurNum++;
	});
	
	$(window).on('beforeunload', function(){ 
		$(this).off('blur resize');
	    return '离开此页面将退出考试!'; 
	});
			
	//关闭窗口方法
	function CloseWebPage(){
	 if (navigator.userAgent.indexOf("MSIE") > 0) {
	  if (navigator.userAgent.indexOf("MSIE 6.0") > 0) {
	   window.opener = null;
	   window.close();
	  } else {
	   window.open('', '_top');
	   window.top.close();
	  }
	 }
	 else if (navigator.userAgent.indexOf("Firefox") > 0) {
	  window.location.href = 'about:blank ';
	 } else {
	  window.opener = null;
	  window.open('', '_self', '');
	  window.location.href = "about:blank";  
	  window.close();
	 }
	}
</script>
</html>

